> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/analytics-alerts/alerts-by-name/intense-sso-failures.md).
# Intense SSO failures
### Synopsis
| Field | Value |
| -------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Activation Period | 14 Days |
| Training Period | 30 Days |
| Test Period | 10 Minutes |
| Deduplication Period | 1 Day |
| Required Data | Requires one of the following data sources:
AzureAD OR Azure SignIn Log OR Idira OR Duo OR Google Workspace Authentication OR Okta OR OneLogin OR PingOne
|
| Detection Modules | Identity Analytics |
| ATT\&CK Tactic | Credential Access (TA0006), Initial Access (TA0001) |
| ATT\&CK Technique | Valid Accounts (T1078), Brute Force: Password Spraying (T1110.003), Brute Force: Password Guessing (T1110.001) |
| Severity | Informational |
### Description
An abnormally high amount of SSO authentication attempts were seen within a short period of time. This could be the outcome of a brute-force login attempt.
### Attacker's Goals
An attacker is attempting to gain access to an account secured with MFA.
### Investigative actions
* Check the legitimacy of this activity and determine whether it is malicious or not.
* Check whether a successful login was made after unsuccessful attempts.
### Variations
Intense SSO failures with suspicious characteristics
**Synopsis**
| Field | Value |
| ----------------- | -------------------------------------------------------------------------------------------------------------- |
| ATT\&CK Tactic | Credential Access (TA0006), Initial Access (TA0001) |
| ATT\&CK Technique | Valid Accounts (T1078), Brute Force: Password Spraying (T1110.003), Brute Force: Password Guessing (T1110.001) |
| Severity | Low |
**Description**
An abnormally high amount of SSO authentication attempts were seen within a short period of time. This could be the outcome of a brute-force login attempt.
**Attacker's Goals**
An attacker is attempting to gain access to an account secured with MFA.
**Investigative actions**
* Check the legitimacy of this activity and determine whether it is malicious or not.
* Check whether a successful login was made after unsuccessful attempts.
---
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